Heart disease rate is a population-level health indicator used to compare the prevalence represented in the dataset across countries and territories. The 2026 heart disease rates by country ranking expresses values per 100,000 people, allowing countries with different population sizes to be compared using a standardized measure. The dataset includes an overall heart disease rate together with separate male and female rates, making it possible to examine both international and sex-based differences. Rates can vary across populations for many reasons, including demographics and other health, behavioral, environmental and socioeconomic factors. The source identified in the supplied dataset is WHO.